DS {EloRating}

David's score

Description

calculate David's scores from an interaction matrix

Usage

DS(interactionmatrix, prop = c("Dij", "Pij"))

Arguments

interactionmatrix

square interaction matrix with winner in rows and losers in columns, for example the output from creatematrix

prop

the type of dyadic win proportion to be use. By default corrected for number of interactions in a dyad (prop="Dij"), otherwise the raw proportion (prop="Pij")

Value

a data.frame with columns ID, DS (David's scores) and normDS (normalized David's scores)

Author(s)

Christof Neumann

References

David HA (1987). “Ranking from unbalanced paired-comparison data.” Biometrika, 74, 432-436. doi:10.1093/biomet/74.2.432.

Gammell MP, de Vries H, Jennings DJ, Carlin CM, Hayden TJ (2003). “David's score: a more appropriate dominance ranking method than Clutton-Brock et al.'s index.” Animal Behaviour, 66, 601-605. doi:10.1006/anbe.2003.2226.

de Vries H, Stevens JMG, Vervaecke H (2006). “Measuring and testing the steepness of dominance hierarchies.” Animal Behaviour, 71, 585-592. doi:10.1016/j.anbehav.2005.05.015.

Examples

data(bonobos)
DS(bonobos)
DS(bonobos, prop = "Pij")